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  1. <?php
  2.  
  3. $s = "abc 123 and 4";
  4. $res = preg_replace('~\D+~', '', $s);
  5. echo $res;
Success #stdin #stdout 0s 82944KB
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Standard input is empty
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1234
https://ideone.com/aqc0vO
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
secret

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